| Content Areas | % of Questions |
|---|---|
| General Low-voltage Control | 10 |
| Circuits & Equipment Operating at Less than 50 Volts & Storage Batteries | 10 |
| Class 1, Class 2 & Class 3 Circuits | 30 |
| Fire Alarm System Control Circuits | 10 |
| Instrumentation Tray Cable, Optical Fiber Cables, Closed Loop & Programmed Power Distribution | 30 |
| Communication System Control Wiring | 10 |
NOTE: Only ONE of the NEC index books (3a or 3b) needs to be purchased.
QUESTION: "What is the difference between the National Electrical Code (NEC) and the Handbook version?". As far as the actual NEC code quoted in the text... it's the same.
The NEC Handbook has additional diagrams, graphics and explanations inserted into the text (adding more pages and raising the price). It was designed for engineers and inspectors. The typical exam candidate should not use it as a preferred reference.
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